5x3 - The Brokenwood Mysteries

Cycling is very de rigour around the globe and no less in Brokenwood. When one such MAMIL, (Middle Aged Man In Lycra), Lester Nyman, reaches the top of a local mountain after a gruelling ride and suffers a massive coronary, it doesn't seem suspicious. But then Gina reveals his toxicology showed astronomical levels of caffeine in his system and Mike starts to look more closely.